Near-Base Multiplication Worksheet

Vedic maths trick 3: Multiplying numbers near 10, 100 and 1000 · Set 17 · 40 sums

The trick (Nikhilam Navatashcaramam Dashatah): Write how far each number is from the base (− if below, + if above). Left part: cross-add — one number plus the other’s difference. Right part: multiply the two differences; it must have as many digits as the base has zeros (carry the extra). One above and one below? The right part is negative: take 1 from the left part and write base − that amount.

1. 1.115 × 101 =
2. 2.115 × 113 =
3. 3.12 × 14 =
4. 4.99 × 96 =
5. 5.968 × 989 =
6. 6.1009 × 983 =
7. 7.112 × 85 =
8. 8.8 × 8 =
9. 9.85 × 90 =
10. 10.1031 × 1010 =
11. 11.105 × 112 =
12. 12.106 × 113 =
13. 13.9 × 7 =
14. 14.997 × 967 =
15. 15.964 × 968 =
16. 16.95 × 99 =
17. 17.9 × 8 =
18. 18.11 × 12 =
19. 19.14 × 7 =
20. 20.12 × 11 =
21. 21.88 × 92 =
22. 22.968 × 985 =
23. 23.102 × 108 =
24. 24.12 × 8 =
25. 25.102 × 98 =
26. 26.109 × 115 =
27. 27.968 × 989 =
28. 28.114 × 113 =
29. 29.114 × 106 =
30. 30.99 × 97 =
31. 31.92 × 87 =
32. 32.11 × 9 =
33. 33.95 × 94 =
34. 34.111 × 90 =
35. 35.108 × 103 =
36. 36.7 × 9 =
37. 37.89 × 90 =
38. 38.1032 × 1019 =
39. 39.97 × 95 =
40. 40.14 × 12 =

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